Make a gold reflective object
To do this in cycles, you'll want a glossy shader.

You can do this from the properties menu like this:



But this actually will create the corresponding material nodes in the material node editor:



At least in cycles, the node editor is a lot easier and faster to work with directly once you get used to it, allowing you to create more complex setups quickly:



See the manual for a complete list and description of all cycles nodes.

To help make it look more realistic, use a non-uniform/textured environment to avoid flat looking reflections: